Garbage-incinerating furnace.



' E. SMITH.

GARBAGE INGINERATING FURNAGE.

APPLICATION FILED APR. 23, 1912.

1,037,676, Patented Sept.3,1912.

. nnraa n s rn'rns Parana canton.

EDWARD SMITH, OF HUNTINGTON, INDIANA.-

Specification of Letters Patent.

GARBAGE-INCINERATING FURNACE.

' Application filed April 23, 1912. Serial No. 692,847. z

To all whom it may concern:

Be it known that I, ED'WARD SMITH, a citizen of the United States,residing at Huntington, in the county of Huntington and State ofIndiana, have invented new and useful Improvements inGarbage-Incinerating Furnaces, of which the following is aspecification.

My inven'tionrelates to i'ncinerating furnaces for burning ordinaryrefuse and garbage, and consists in certain improved features ofconstruction, which will now be described in connection with theaccompanying drawing in which,

Figure l is a vertical section, taken approximately on line AA of Fig.2,'and a partial elevation of a furnace constructed according to myinvention, and Fig. 2 is a horizontal plan section of the same.

In my experience with incinerating furnaces as heretofore constructed,particularly with those built according to Patent No. 971,548, toMcGuire, I have found that they have to be practically rebuilt everytime they are allowed to cool down. To avoid this objection I havedevised the construe tion shown, which permits of expansion andcontraction of the walls without injury.

My improved furnace consists of a hem'ispherical outer shell 1 of commonbrick, and a hemispherical inner shell or lining-2 of fire brick, theouter radius of the latter being less than the inner radius of theformer, whereby an air space 3 is left between the outer shell andlining,'permittiug the latter to expand under the heatof the furnacewhen in operation, and to contract when the furnace is shut down,without injury to'itself or to the outer shell which, of course, islikewise free to expand and contract by itself under such temperaturevariat-ions as it is subjected to; The floor or hearth' of the furnaceis also of fire-brick and is slightly dished toward the central opening5, from beneath which runs an arched or circular drain 6 to the outsideof the furnace.

7 is a door through which ashes, etc., are removed.

s is the outlet-from the hearth a ate chimney 9.. I, i 10 IS a branchdue or drain, communieat Patented se sis, rare,

ing at one end with the chimney and'et the a other Withthe drain 6beneath the openingfigj it 11 represents the arched firebox, contain-fing the grate 12, and 13' is a bafiie wall a;

properly direct the flame from the grate over the material to be burned.

"1a is the hopper through which the material is introduced, falling, ofcourse, onto the floor or hearth over the opening 5.

The furnace being already in operation,=

the moisture is at once dried out and then the material is burned. Theashes and in- 5 An incinerat-ing furnace consisting of an outerhemispherical shell having'a horizontal base, an inner hemisphericallinin spaced from said shell, a chimneyconnecte to the shell and base, ahearth on said base having a central opening which' communh cates withan opening mthe base, sald' chimney adjacent its base being formed witha downwardly inclined outlet that extends through the said lining andhas the wall formed by its bottom extending adjacent the hearth, saidbase being formed with an arched drain which at one end communicateswith said base opening and at its opposite end extends through theperiphery" of the base, a. branch drain formed in't-he base that extendsfrom the base opening and 'is curved upwardl to extend into the outletat the end thereo 4 adjacent the hearth, and

a fire box at one side of the hearth.

In testimony whereof 'l have hereunto set my hand in presence of -twosubscribing witnesses. v

EDWARD snrrn:

Witnesses I FRANK E. STRAUSS;

